Microstructure and Properties in Simulated Seawater of Copper-Doped Micro-arc Coatings on TC4 Alloy
Source abstract
Abstract
Micro-arc oxidation (MAO) ceramic coatings were prepared on TC4 titanium alloys by adding CuSO4 to a (NaPO3)6 base solution. The microstructures of the MAO coatings were characterized by scanning electron microscopy (SEM), energy dispersive (EDS), and X-ray photoelectron spectroscopy (XPS). The corrosion resistance and wear resistance of these coatings were evaluated via hydrochloric acid immersion of weight deficit and friction tests. Those results indicated the presence of Cu in the MAO coating in the form of CuO and Cu2O. Incorporation of CuSO4 results in a thickness and roughness increase in the coating. The coating has a lower coefficient of friction (0.2) upon the addition of 4 g/L of CuSO4. The antibacterial properties of the MAO coatings were maximized at 6 g/L of CuSO4. However, the corrosion resistance of the copper-doped MAO coating did not exceed the undoped coating. This study shows that the addition of CuSO4 to the electrolyte successfully prepared copper-containing micro-arc oxidation coatings, which improved the wear resistance and antibacterial properties of the coating.
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Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Metal and Thin Film Mechanics · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China
Shaanxi Key Laboratory of Biomedical Metal Materials, Northwest Institute for Non-ferrous Metal Research, Xi’an 710016, China
School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Funding
National Natural Science Foundation of China · China Postdoctoral Science Foundation · Shaanxi Provincial Education Department · Key research and development plan of Shaanxi Province Industrial Project
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